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8 paper/dynamic-extensions.tex
@@ -24,7 +24,8 @@ \subsection{Match Syntax}
the left hand side of the match.
The \verb|regexp| regular expression is a box standard regular
-expression which is defined by the grammar at Fig.~\ref{fig:reggram}.
+expression~\cite{regexp} which is defined by the grammar at
regexp ::= concat-regexp '|' regexp
@@ -157,7 +158,7 @@ \subsubsection{Type system}
driving force of the inference. First of all, it is easy to
define a subset relationship on two regular expressions
$r_1 \sqsubseteq r_2$. As we know, we can always build a DFA for
-a regular expression and minimize it, which gives us a minimal
+a regular expression and minimize it~\cite{dragon-book}, which gives us a minimal
possible automaton for the language recognized by a given regular
expression. It means that $r_1 \sqsubseteq r_2 \Rightarrow
min (det (r_1)) \sqsubseteq min (det (r_2))$. For two minimized
@@ -193,7 +194,8 @@ \subsubsection{Type system}
In order to propagate type information in the branches obtained from the
application of \verb|type| construct, we have to know how to subtract
-two regular expressions, which is, again, simple. If $T$ and $S$ are
+two regular expressions~\cite{reglang}, which is, again, simple.
+If $T$ and $S$ are
respective DFA for subtracted types, all we have to do is to construct
$C = T \times S$ and make the final states of $C$ be the pairs where $T$
states are final and $S$ states are not.
8 paper/intro.tex
@@ -3,7 +3,8 @@ \section{\label{sec:intro}Introduction}
Very often languages like C/C++ introduce new constructs in their
syntax. Some of the constructs require serious modifications of the
compiler to be supported properly, but some of them may be purely syntactical,
-like, for example, user-defined literals in C++11. In this paper we are
+like, for example, user-defined literals in C++11~\cite{cpp11}. In this
+paper we are
concerned with a system that allows a class of modifications at the
level of the programming language itself, without the necessity to
modify the compiler.
@@ -32,7 +33,7 @@ \section{\label{sec:intro}Introduction}
\item %The classical example from C language is a type-cast
In C, a user can define an arbitrary type using the
- \verb|typedef| construct, which makes it impossible
+ \verb|typedef| construct~\cite{c99}, which makes it impossible
to disambiguate the expression \verb|(x) + 5|, unless
we know whether \verb|x| is a type or not. It could
be treated as a type-casting of an application of unary
@@ -119,7 +120,8 @@ \section{\label{sec:intro}Introduction}
be different depending on the agreement, however the common
case is to say that the unit is a sequence of characters of the
same class. The number of classes is normally fixed, however
-character belonging to the class may be static as in C preprocessor,
+character belonging to the class may be static as in
+C preprocessor~\cite{prepr},
where, for example, notion of space cannot be changed, or dynamic as
in \TeX, where one could specify that a certain character is a
delimiter. Then the substitution itself is a replacement of
55 paper/paper.bib
@@ -6,6 +6,16 @@ @techreport{c99
Year = {1999}
+ Author = {ISO/IEC},
+ Institution = {International Organization for Standardization,
+ Geneva, Switzerland.},
+ Title = {ISO/IEC 14882:2011, Information technology -- Programming
+ languages -- {C++}},
+ Year = {2011}
author = {Free Software Foundation},
title = {{GCC}},
@@ -75,4 +85,49 @@ @article{sac2c
keywords = {compiler optimisation, data parallel programming, multithreading, single assignment C},
+ added-at = {2007-03-21T15:27:04.000+0100},
+ author = {Stallman, Richard M. and Weinberg, Zachary},
+ biburl = {},
+ interhash = {48f2e346ba08a6210b4e78113bd40051},
+ intrahash = {98733f74d0634e006804866030988242},
+ keywords = {macroprocessor macros manual},
+ timestamp = {2007-03-21T15:27:04.000+0100},
+ title = {The C Preprocessor},
+ year = 2005
+ author = {Thompson, Ken},
+ title = {Programming Techniques: Regular expression search algorithm},
+ journal = {Commun. ACM},
+ issue_date = {June 1968},
+ volume = {11},
+ number = {6},
+ month = jun,
+ year = {1968},
+ issn = {0001-0782},
+ pages = {419--422},
+ numpages = {4},
+ url = {},
+ doi = {10.1145/363347.363387},
+ acmid = {363387},
+ publisher = {ACM},
+ address = {New York, NY, USA},
+ keywords = {match, regular expression, search},
+ author = {Yu, Sheng},
+ chapter = {Regular languages},
+ title = {Handbook of formal languages, vol. 1},
+ editor = {Rozenberg, Grzegorz and Salomaa, Arto},
+ year = {1997},
+ isbn = {3-540-60420-0},
+ pages = {41--110},
+ numpages = {70},
+ url = {},
+ acmid = {267848},
+ publisher = {Springer-Verlag New York, Inc.},
+ address = {New York, NY, USA},
8 paper/regexps.tex
@@ -1,7 +1,7 @@
\section{\label{sec:regexps}Regular expressions}
We have devised a method of implementing match syntax that will be time
-effective during pre-processing. We have also created a prototype that
+effective during the transformation. We have also created a prototype that
ilustrates some of the features described in this article. This section will,
in short, describe the approach we selected, for the full description, however,
turn to the full paper.
@@ -13,8 +13,8 @@ \section{\label{sec:regexps}Regular expressions}
using the subset construction algorithm.
In order to minimise execution time even further, we minimise the created DFA.
-The minimisation algorithm is described in detail in the "Dragon
-Book"\cite{dragon-book}. The algorithm creates sets of states that cannot be
+The minimisation algorithm is described in detail in the ``Dragon
+Book''\cite{dragon-book}. The algorithm creates sets of states that cannot be
distinguished by any input token sequence. Once the algorithm fails to break
the sets into smaller ones it stops. These sets of states then become new
states of the minimal automaton.
@@ -57,7 +57,7 @@ \subsection{DFA grouping}
The second option is more complex. In this case we combine the automata created
for each of the matches together into a single DFA. This is done in order to
-reduce matching time, the automata megring algorithm is described in the full
+reduce matching time, the automata merging algorithm is described in the full
article. The second option is more interesting, as it allows matching of
\verb/n/ independent patterns in $O(l)$ steps, where \verb/l/ is the amount
of tokens to be matched. It is important to note as well that our method of

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